The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2007
Filed:
Oct. 25, 2005
Satoshi Hachiya, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Satoshi Hachiya, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
A blue organic electroluminescent device including a first reflective member (), a second reflective member () and an emitting layer () arranged between the first and the second reflective members (), (); wherein the emitting layer comprises a first organic luminescent medium emitting light with a blue first peak wavelength and a second medium emitting light with a second peak wavelength; each of lights emitted from the first and second organic luminescent mediums are interfered with between the first and second reflective members (), () to enhance light emitted from the first organic luminescent medium; and light taken out to outside has a first peak wavelength and a second peak wavelength that satisfy the following relationship:1>2×5,1<2×100wherein I1 is a luminous intensity at the first peak wavelength and I2 is a luminous intensity at the second peak wavelength.